Some Things That Can Happen When the Minimum Principle Fails

نویسنده

  • DANIEL W. STROOCK
چکیده

Most analysts feel about scalar valued, linear heat flows the way they do about their grandparents: they are stable, reliable, but dull. To a large extent, the origin of their stability is the minimum principle, which says that the flow preserves non-negativity. In this lecture, I will describe some examples of what can happen when one introduces boundary conditions which destroy the minimum principle. If nothing else, this line of research provides a nice example of the way probabilistic intuition can guide one to analytic conclusions. Thursday, October 2, 4:15 p.m. Bldg. 380, Room 380-W http://math.stanford.edu/coll/0809/

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Optical Communication Based Control Using Counter Source Codes & TDM

When an electronic research succeeds?—when it meets the needs of the people who use it, when it performs flawlessly over a long period of time, when it is easy to modify and even easier to use—it can and does change things for the better. But when it fails—when its results are dissatisfied, when it is error prone, when it is difficult to change and even harder to use—bad things can and do happe...

متن کامل

On the Bourbaki-Witt Principle in Toposes

The Bourbaki-Witt principle states that any progressive map on a chain-complete poset has a fixed point above every point. It is provable classically, but not intuitionistically. We study this and related principles in an intuitionistic setting. Among other things, we show that Bourbaki-Witt fails exactly when the trichotomous ordinals form a set, but does not imply that fixed points can always...

متن کامل

A generalization of Bertrand's test

One of the most practical routine tests for convergence of a positive series makes use of the ratio test. If this test fails, we can use Rabbe's test. When Rabbe's test fails the next sharper criteria which may sometimes be used is the Bertrand's test. If this test fails, we can use a generalization of Bertrand's test and such tests can be continued innitely. For simplicity, we call ratio test,...

متن کامل

Some observations on a lightweight authentication scheme with capabilities of anonymity and trust in Internet of Things (IoT)

Over the last years‎, ‎the concept of Internet of Things (IoT) leads to a revolution in the communications of humans and things. ‎Security and efficiency could be the main challenges of that communication‎‎. ‎‎On the other hand, ‎ authenticity and confidentiality are two important goals to provide desired security in an information system‎, including IoT-based applications. An Authentication an...

متن کامل

Cosmological argument in proving the existence of God from Imam Khomeini's (RA) point of view

  This article reviews Cosmological argument in proving the existence of God from the viewpoint of Imam Khomeini (RA). At first, various views to the existence of God are reviewed and then its etymology will be reviewed. Cosmological argument proves God through universal premises about truth and world and and the Movement Argument, Casual Argument and Necessity and Possibility Argument are dif...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008